CN104285501B - Device for the sensing heating of billet - Google Patents
Device for the sensing heating of billet Download PDFInfo
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- CN104285501B CN104285501B CN201280069693.9A CN201280069693A CN104285501B CN 104285501 B CN104285501 B CN 104285501B CN 201280069693 A CN201280069693 A CN 201280069693A CN 104285501 B CN104285501 B CN 104285501B
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- billet
- permanent magnet
- tubular body
- pipe
- metal material
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
- H05B6/102—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces the metal pieces being rotated while induction heated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/42—Cooling of coils
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
- H05B6/145—Heated rollers
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- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
A kind of device of the sensing heating of the metal billet for having high conductivity, including: tubular body, support multiple permanent magnet, multiple permanent magnets are arranged in inside tubular body, angularly spaced from each other open, and be arranged so that multiple permanent magnet replaces with relative polarity；For the supporting member of billet, it is arranged in tubular body internal and towards described magnet；Motor, is suitable to make tubular body rotate to induct at the electric current of metal material internal recycle in billet relative to billet, obtains billet heating thereby through Joule effect.Providing the monoblock type cooling system for permanent magnet, it is carried by tubular body, and is suitable to supply cooling air-flow between adjacent permanent magnet.
Description
Technical field
The present invention relates to the device of the sensing heating for billet.
Background technology
The sensing heating of the billet of nonferromugnetic material can be passed through to use the induction apparatus (conventional art) with appropriate frequency operating to carry out, but this system does not allow to reach more than the level of efficiency of 50%.Patent application PCT WO04066681 describes one for nonmagnetic conductive metal material (such as, copper or aluminum) billet sensing heating device, wherein move generation magnetic field by permanent magnet relative to metal billet, thus generating the faradic current at conductive metal material internal recycle, it is heated by Joule effect billet by this way.But, this system is not completely suitable in batch production.
Summary of the invention
It is an object of the invention to provide the device of the defect that can overcome known devices, specifically there is small size, high reliability, relatively low installation and operation expense and extremely simple and easy and multi-functional device.
Therefore, the present invention relates to the device that the sensing of the non-ferromagnetic metal billet for having relatively high electric conductivity is heated, this device includes: at least one tubular body, it includes multiple permanent magnet successively, multiple permanent magnets are arranged to the annular parallel with the respective bus bars of tubular body, angularly spaced from each other open, and be so arranged, so that multiple permanent magnet replaces with relative polarity；At least one supporting member of described billet, is suitable in use support arrangement billet in tubular body, and towards described magnet；And driving device, for in use producing rotating against between tubular body and described billet, thus owing to described magnet produces the faradic current at billet self internal recycle relative to the relative motion of the metal material of billet in described billet, obtaining metal material heating thereby through Joule effect；Described device characteristic is in that, it also includes the cooling system for described permanent magnet, and cooling system is integrally carried by described tubular body, and is suitable to supply cooling air-flow between adjacent permanent magnet.
The invention still further relates to the method that the sensing of the billet for obtaining the metal material with relatively high electric conductivity is heated, comprise the following steps: perform rotating against between described billet and multiple permanent magnet, so that owing to described magnet produces the faradic current at the internal recycle of billet own relative to the relative motion of metal material in described billet, the heating of metal material is obtained thereby through Joule effect, wherein, multiple permanent magnets are arranged to annular, towards billet and angularly spaced from each other open, and it is arranged so that multiple permanent magnet replaces with relative polarity；It is characterized in that, the method is further comprising the steps of: cool down described permanent magnet by the air-flow of circulation between adjacent magnet.
It addition, the supporting member being used for billet includes the housing being made up of refractory material, this housing is suitable to hold described billet and can stop the hot-fluid from the described billet heated by Joule effect towards described permanent magnet.Specifically, this housing includes two half-shell being linked together to hold billet.
Alternately, billet can be supported in its end by suitable mechanism.By using this solution, will be suitable for protecting magnet to be directly arranged at around magnet from the layer of the isolated material of the heat transmitted by the billet that is heated, and be properly carried out constraint to rotate together with same magnet.
According to an aspect of the present invention, cooling system includes multiple pipe, multiple pipes form a part for described tubular body, there is open end and described cooling air can be transmitted, each pipe is all inserted between two adjacent permanent magnets, and the sidewall of each pipe is positioned to contact with described permanent magnet.
In this way, the defect of prior art is overcome completely.It practice, limit the heat being radiated to permanent magnet from billet.Additionally, under any circumstance, most heat is all taken away by the cooling air stream of circulation in pipe, and wherein, pipe is preferably made of brass, and copper is nonmagnetic substance, is also good heat conductor.This air-flow is produced with being anchored to a series of blades thereon by the rotation of tubular body.
Accompanying drawing explanation
Present invention is described for non-limiting embodiment hereinafter with reference to the present invention only provided by way of example and the accompanying drawing with reference to expression preferred implementation, in the accompanying drawings:
Fig. 1 illustrates the axonometric chart constituting the first element according to assembly of the invention；
Fig. 2 illustrates the exploded perspective view constituting the second element according to assembly of the invention；
Fig. 3 illustrates the sectional view of the first element and the second element being linked together；
Fig. 4 illustrates the longitudinal sectional view of Fig. 3 shown device；
Fig. 5 illustrates the longitudinal sectional view the same with Fig. 4 of the first variant of Fig. 4 shown device；
Fig. 6 illustrates the second variant of Fig. 4 shown device；And
Fig. 7 diagrammatically illustrates longitudinal view of another possible structural variant of the present invention.
Detailed description of the invention
In figure 3, accompanying drawing labelling 1 instruction is for by having the metal material of relatively high electric conductivity (such as, such as copper or aluminum) device of the sensing heating of the billet 2 (can also refer to Fig. 2) made, billet 2 must be heated to high temperature (such as, 500 DEG C to 600 DEG C) to carry out follow-up mechanical processing process, such as, extrusion or punching press.In the example shown, billet 2 is the cylinder with constant circular cross-section.It will be apparent, however, that billet 2 can be and shown variform shape, for instance, square sectional or polygonal cross-section.
Device 1 includes tubular body 4, tubular body 4 is not limited to have such as the approximate circular cross-section (also can referring to Fig. 3) shown in when relevant, and having the axis 5 relative to its symmetry, in use, tubular body 4 is arranged to substantially co-axial with billet 2；Tubular body 4 includes permanent magnet 7p and the 7n of multiple elongated, permanent magnet 7p and the 7n of multiple elongateds is arranged to parallel (namely with the corresponding bus of tubular body, parallel to the axis 5 extensions) annular, angularly spaced from each other open, and it is arranged so that permanent magnet 7p and the 7n of multiple elongated replaces along the cylindrical form interior surface of tubular body 4 with relative polarity, wherein, the cylindrical form interior surface of tubular body 4 is limited by the relative polarity local of permanent magnet 7p and the 7n of multiple elongateds.
Device 1 also includes the supporting member 8 for billet 2, and supporting member 8 can in use support billet 2 so that billet 2 to be arranged in tubular body 4 (Fig. 3) internal so that it is towards magnet 7p and the 7n around billet 2.Specifically, in the illustrated example shown in fig. 2, supporting member 8 at least can hold billet 2 at least in part wherein before permanent magnet 7n and 7p, and is made up of refractory material.
It is additionally provided with driving device 10 (schematically showing in the diagram), driving device 10 is adapted to provide for the rotation between tubular body 4 and billet 2, owing to magnet 7p and 7n produces the faradic current at billet self internal recycle relative to the relative motion of metal material with high conductivity in billet 2, to obtain the heating of metal material thereby through Joule effect.
Generally, tubular body 4 rotates relative to billet 2 (being remained stationary by supporting member 8), behaves like rotor.It is known that, it is possible to obtain identical effect by making billet relative to the magnet rotation that can remain stationary.
According to the present invention, being provided with the cooling system 13 for permanent magnet 7p and 7n, cooling system 13 is integrally carried by tubular body 4, and can supply cooling air-flow between adjacent permanent magnet 7p and 7n.
This system 13 contributes to the continuous coo1ing of magnet, thus preventing them to be protected from owing to passing through any thermal-radiating loss in efficiency caused that is heated from billet 2.
In more detail (Fig. 3), except magnet 7p and the 7n being alternately arranged, tubular body 4 also includes tube-like envelope 3, tube-like envelope 3 is by magnetic material (such as, steel) make, there is inside it polygonal cross-section (being 16 limit shapes in this example), and inner containment has the elongated permanent magnet in antiparallelogram cross section, wherein, bigger 7m contacts with housing 3 securely, and less 7b faces the inside of tubular body 4, therefore, in use, less 7b faces billet 2.
Permanent magnet 7n and 7p has diametrical magnetization, and is preferably made up of the metal alloy of the rare earth element including such as neodymium or samarium.It is known that the chemical element being referred to as rare earth element (or lanthanide series) has the electron energy level f (it can hold up to 14 electronics) being only partially filled with.Electronics spin in this energy level can be alignd easily under the existence of high-intensity magnetic field, therefore, uses the magnet being made up of rare earth element in these cases.The more conventional kind of these magnets is samarium-cobalt magnet and neodymium-iron-boron magnet.
Cooling system 13 includes the multiple pipes 15 being similarly formed a part for tubular body 4, in this case, multiple pipes 15 carry inside housing 3, and it is axially inserted in housing 3, and with permanent magnet 7n and 7p alternately, therefore multiple pipes 15 are arranged to parallel with axis 5, namely, longitudinal development with magnet 7n and 7p is parallel, in order to the inner surface that magnet 7n and 7p (when relevant, with face 7b) limits tubular body 4.Pipe 15 has the opposed end 151 (Fig. 4) of the outside leading to tubular body 4, it is possible to set up cooling air stream；As in Fig. 3 it will be clear that each pipe 15 is all inserted between two adjacent permanent magnet 7p and 7n, and permanent magnet 7p and the 7n that the sidewall of each pipe 15 is arranged to and is adjacent contacts.Specifically, pipe 15 also has the trapezoidal cross-section that the cross section with magnet 7n and 7p is complementary, in order to limit continual Guan Bi ring with magnet 7n and 7p around axis 5.In this way, in pipe 15, the air of flowing contributes to cooling down two magnet 7n and 7p with relative polarity.
Pipe 15 eligibly has antiparallelogram cross section, wherein, bigger 15m is arranged to firmly touch with the interior thereof of housing 3e, and less 15n faces the inside of tubular body 4, then in use towards billet 2, and the face 7b that less 15n is arranged to permanent magnet 7n and 7p flushes.
Cooling system 13 can be assisted by fan 17, fan 17 is integral with tubular body 4 and angularly carries, and it is provided with blade 18, wherein, blade 18 is arranged along circular path, blade 18 has such shape and layout so that blade 18 is towards the first end of pipe 15, and due to tubular body 4 around the rotation results of axis 5 the internal transmission air-flow at pipe 15.
Supporting member 8 shown in Fig. 2 includes the housing being made up of refractory material (such as, ceramic material), and this housing is suitable to hold billet 2, and can stop from the billet heated by Joule effect towards the hot-fluid of permanent magnet 7p and 7n.
This strategy additionally aids the heating preventing Magnet.
Specifically, limit the housing of supporting member 8 as tubular, and include first half-shell 19a and the second half-shell 19b, first half-shell 19a and the second half-shell 19b is linked together in a longitudinal direction, and billet 2 can be held when being linked together.
In the embodiment schematically shown in the diagram, supporting member 8 is connected to vertical supporting member 20 an end by projection.Driving device 10 includes motor 20m, motor 20m and is set to tubular body 4 rotate by actuating device 22 (schematically showing).Tubular body 4 transfers to be supported by vertical supporting member 24, and can be angularly displaced from relative to vertical supporting member 24 under the thrust of motor 20m.
In embodiment in Figure 5, the Part I of billet 2 is accommodated in the inside of the cavity of the first tubular body 4 of first heater 1, wherein, first tubular body 4 of first heater 1 is equipped with more than first magnet 7n and the 7p to be arranged in annular in the way of having described that, and the Part II of same billet is accommodated in the inside of cavity of the second tubular body 4 of the secondary heating mechanism 1b with the structure identical with device 1, wherein, secondary heating mechanism 1b is equipped with more than second magnet 7n and the 7p to be arranged in annular in the way of having described that, and billet 2 is to support the apparent mode of those skilled in the art, such as, supported along centrage by supporting member 20.Therefore, the variant in Fig. 5 achieves the complicated heating system 100 that can generate thermograde in billet 2；Therefore, this system 100 can be used for by heating billet 2 in the way of differentiation by making the tubular body 4 of device 1 and 1b (it has mutual independence and independent motor 20m and the 20m' controlled) rotate at different rates for this purpose.It is clear that be capable of the heating system with the region of the different differentiation heating of any amount " n " by the quantity increased to be independently of one another the tubular body being driven.
Billet 2 and tubular body 4 can also be realized produce different differentiated heating profiles along the process system of the alternating movement of axis 5 by manufacturing.
In the embodiment shown in fig. 6, identical with the device 1 having described that device 1b has the tubular body 4 being coaxially mounted within another tubular body 30 supported by the abutment wall 31 being lateral to axis 5 in every other.Tubular body 4 provides in a known manner relative to the multiple bearings 34 being inserted between two tubular bodies that are rotated through of tubular body 30.In this way, the process of heating billet 2 can be consecutively carried out in the following way: supporting member 8 that use refractory material, that be similarly tubulose, and supply " continuous print " (more properly along axis 5, very long) billet 2, then, being heated to desired temperature along with its contact portion and be supplied to gradually in known manner to extruder, extruder is known, and does not for simplicity show that.
Reference schematically shows Fig. 7 of the variant 1' after the constructively improvement of device 1, and billet 2 is supported by supporting member 8' in its end；Supporting member 24' is associated with supporting member 8'；Supporting member 24' carries sliding part 240, sliding part 240 can parallel to the axis 5 slips, and it is driven by suitable piston (not shown), sliding part 240 is by suitable bearing freely supporting tubular main body 4, and is associated with the motor 20m being connected to tubular body 4 by actuating device 22；Tubular body 4 is equipped with the fan 17 being integrally carried on housing 3, and by making sliding part 240 slide, its axis 5 can be parallel to shift, in use it is installed around the billet 2 being coaxially mounted on axis 5 on supporting member 8', or it is lateral to supporting member 8' and moves tubular body 4, enable on tubular body 4, billet 2 positioned and remove billet 2 from tubular body 4.
When using this solution; in order to protect magnet 7n and the 7p of the part forming tubular body 4; the remainder of tubular body 4 manufactures in the way of having described that; tubular body 4 includes additional element; additional element limits by being inserted in tubular sheath 80 between magnet 7n and 7p and between axis 5, that be made up of refractory material (such as, Muscovitum).The sheath of this insulant or layer 80 can protect magnet 7n and 7p from the impact of the heat transmitted by the billet 2 heated, and are placed directly in around magnet 7n and 7p, are properly carried out being anchored to magnet 7n and 7p integrally to rotate.
By this variant, additionally it is possible to make supporting member 8' be equipped with the suitable instrument 90 being such as made up of thermocouple and/or optical pyrometer.
Based on the content having described that, it is obvious that being capable of, by device 1,1b, 1' or 100, the method that the sensing of the metal material for obtaining the billet 2 with relatively high electric conductivity and random length is heated, the method comprises the following steps:
-perform rotating against between billet 2 and more than at least the first permanent magnet 7p and 7n, to produce the faradic current at the internal recycle of billet own because of magnet in billet relative to the relative motion of the metal material of billet, the heating of metal material is obtained thereby through Joule effect, wherein, multiple permanent magnet 7p and 7n are arranged in annular, towards billet and angularly spaced from each other open, and it is arranged so that multiple permanent magnet (7p and 7n) replaces with relative polarity；And
-by air-flow cooling permanent magnet 7n and the 7p of circulation between adjacent magnet.
In addition it is possible to be easily carried out as previous but be suitable to obtain billet 2 along the method for the heating of the differentiated of its longitudinal axis 5 identical with the longitudinal axis of the device 1 of formation system 100 and 1b, the method comprises the following steps:
-set up and be arranged in annular and towards more than at least the first permanent magnets of different axial components of billet and more than second permanent magnet；And；
-make more than at least the first permanent magnets being arranged in annular and more than second permanent magnet rotate at different rates relative to billet.
Claims (14)
1. one kind for have relatively high electric conductivity metal material billet (2) sensing heating device (1,1', 1b, 100), including:
At least one tubular body (4), it includes multiple permanent magnet (7n, 7p) successively, the plurality of permanent magnet (7n, 7p) is arranged to the annular parallel with the respective bus bars of described tubular body (4), angularly spaced from each other open, and be arranged so that the plurality of permanent magnet (7n, 7p) replaces with relative polarity；
At least one supporting member (8,8') for described billet (2), described supporting member (8,8') is suitable to the in use support arrangement described billet in described tubular body (4), and towards described permanent magnet (7n, 7p)；And
Driving device (10), for in use producing rotating against between described tubular body (4) and described billet (2), thus owing to described permanent magnet (7n, 7p) produces the faradic current at described billet (2) self internal recycle relative to the relative motion of the metal material of described billet (2) in described billet (2), obtaining the heating of described metal material thereby through Joule effect；
Described device is characterised by, it also includes the cooling system (13) for described permanent magnet (7n, 7p), described cooling system (13) is integrally carried by described tubular body (4), and is suitable to supply cooling air stream between adjacent permanent magnet (7n, 7p).
2. device according to claim 1, wherein, described cooling system (13) includes multiple pipe (15), the plurality of pipe forms a part for described tubular body (4), there is open end and be suitable to transmission cooling air, each pipe (15) is all inserted between two adjacent permanent magnets (7n, 7p), and the sidewall of each pipe (15) is positioned to contact with described permanent magnet (7n, 7p).
3. device according to claim 2, wherein, described cooling system (13) also includes at least one fan (17), described at least one fan (17) is carried by described tubular body (4) entirety, and being provided with and arrange along circular path with ring style and the blade of first end towards described pipe (15), the blade of described fan guarantees the circulation of air in described pipe (15) when the rotation of described tubular body (4).
4. device according to claim 2, wherein, described pipe (15) is made up of nonmagnetic substance.
5. device according to claim 4, wherein, described nonmagnetic substance is copper.
6. device according to claim 3, wherein, described pipe (15) and described permanent magnet (7n, 7p) have the trapezoidal cross-section of complementation.
7. device according to claim 6, wherein, described pipe extends in the axial direction, namely being parallel to described permanent magnet (7n, 7p) to extend, described blade is arranged to annular along by the circular path alternately limited of described permanent magnet (7n, 7p) and described pipe (15).
8. device according to claim 1, wherein, described permanent magnet (7n, 7p) magnetizes radially, and is made up of the metallic compound including rare earth element.
9. device according to claim 1, wherein, described supporting member (8,8') includes the housing (8) being made up of refractory material, described housing (8) is suitable at least hold at least in part before described permanent magnet (7n, 7p) described billet (2), to stop the hot-fluid from the described billet (2) heated by Joule effect towards described permanent magnet (7n, 7p).
10. device according to claim 9, wherein, described housing includes two half-shell (19a, 19b), and said two half-shell (19a, 19b) can be coupled to each other to hold described billet (2).
11. device according to claim 1, wherein, (8') described supporting member coaxially supports described billet (2) at its opposed end place with described tubular body (4), wherein, described tubular body (4) also includes sheath or the protective layer (80) be made up of refractory material, described sheath or protective layer (80) are arranged in described permanent magnet (7n, near 7p), and it is inserted in described permanent magnet (7n, 7p) and between the axis of symmetry (5) of described tubular body (4), and be properly carried out fixing with described permanent magnet (7n, 7p) integrally rotate.
12. device according to claim 1, it is characterized in that, the Part I of described billet (2) is contained in and is provided with the described permanent magnet (7n being arranged to annular, the cavity inside of the first tubular body of first group 7p), and at least Part II of same described billet (2) is contained in and is provided with the described permanent magnet (7n being arranged to annular, the cavity inside of at least the second tubular body of second group 7p), and individually controllable and independent mutually driving device (20m, 20m') rotate at least described first tubular body and described second tubular body at different rates.
13. the method that the sensing of the billet (2) for obtaining the metal material with relatively high electric conductivity is heated, comprise the following steps:
Perform described billet (2) and multiple permanent magnet (7n, rotating against between 7p), so that due to described permanent magnet (7n, 7p) in described billet (2), produce the faradic current at described billet (2) internal recycle own relative to the relative motion of the metal material of described billet (2), the heating of metal material is obtained thereby through Joule effect, wherein, the plurality of permanent magnet (7n, 7p) it is arranged to annular, towards described billet (2) and angularly spaced from each other open, and so it is arranged, so that the plurality of permanent magnet (7n, 7p) replace with relative polarity,
It is characterized in that, described method is further comprising the steps of: cool down described permanent magnet (7n, 7p) by the air-flow of circulation between adjacent permanent magnet (7n, 7p).
14. method according to claim 13, it is characterised in that described method is further comprising the steps of to obtain the differentiation heating of described billet (2) along the longitudinal axis (5) of described billet (2):
Set up and be arranged to annular and towards different axial components, described permanent magnet (7n, 7p) at least the first group of described billet (2) and second group；And
Make to be arranged to described at least the first group of the described permanent magnet (7n, 7p) of annular and described second group rotate at different rates relative to described billet (2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2012/050979 WO2013128241A1 (en) | 2012-03-01 | 2012-03-01 | Device for induction heating of a billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104285501A CN104285501A (en) | 2015-01-14 |
| CN104285501B true CN104285501B (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280069693.9A Active CN104285501B (en) | 2012-03-01 | 2012-03-01 | Device for the sensing heating of billet |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10462855B2 (en) |
| EP (1) | EP2820917B1 (en) |
| CN (1) | CN104285501B (en) |
| ES (1) | ES2582642T3 (en) |
| PL (1) | PL2820917T3 (en) |
| WO (1) | WO2013128241A1 (en) |
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| JP6432605B2 (en) * | 2014-11-06 | 2018-12-05 | 新日鐵住金株式会社 | Eddy current heating device |
| JP6572905B2 (en) * | 2014-11-06 | 2019-09-11 | 日本製鉄株式会社 | Eddy current heating device |
| DE102015219831A1 (en) * | 2015-10-13 | 2017-04-13 | Forschungszentrum Jülich GmbH | Induction furnace, extrusion plant and process |
| ITUB20155468A1 (en) * | 2015-11-11 | 2017-05-11 | Presezzi Extrusion S P A | MAGNETIC INDUCTION OVEN TO HEAT METALLIC BILLETS IN NON-FERROUS MATERIALS TO BE EXTRUDED |
| IT201600074867A1 (en) * | 2016-07-18 | 2018-01-18 | E Wenco S R L | Heating device, use and kit |
| JP6497407B2 (en) * | 2017-03-31 | 2019-04-10 | Ａｇｃ株式会社 | Alkali-free glass substrate |
| KR102231857B1 (en) | 2017-07-11 | 2021-03-24 | 한국전기연구원 | Permanent magnet metal billet induction heating system with self-generated wireless temperature and position diagnostics |
| CN109459330B (en) * | 2018-11-01 | 2021-05-11 | 中车株洲电力机车有限公司 | Equipment for simulating abrasion of sliding block between bow nets |
| KR102235546B1 (en) * | 2020-09-02 | 2021-04-05 | 고등기술연구원연구조합 | Billet heating appratus using permanet magnet and rotation speed control methid thereof |
| IT202200017790A1 (en) * | 2022-08-30 | 2024-03-01 | Presezzi Extrusion S P A | MAGNETIC INDUCTION OVEN WITH IMPROVED HEATING EFFICIENCY |
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- 2012-03-01 CN CN201280069693.9A patent/CN104285501B/en active Active
- 2012-03-01 WO PCT/IB2012/050979 patent/WO2013128241A1/en active Application Filing
- 2012-03-01 PL PL12719059.3T patent/PL2820917T3/en unknown
- 2012-03-01 ES ES12719059.3T patent/ES2582642T3/en active Active
- 2012-03-01 EP EP12719059.3A patent/EP2820917B1/en active Active
- 2012-03-01 US US14/381,936 patent/US10462855B2/en active Active
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| US4350861A (en) * | 1979-07-09 | 1982-09-21 | Compagnie Electro-Mecanique | Apparatus for heating strip elements in a continuous pass process by electromagnetic induction |
| CN101965073A (en) * | 2010-09-14 | 2011-02-02 | 张家港金米兰德龙机械有限公司 | Electromagnetic induction heating system of plastic machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2820917A1 (en) | 2015-01-07 |
| WO2013128241A1 (en) | 2013-09-06 |
| US20150083713A1 (en) | 2015-03-26 |
| ES2582642T3 (en) | 2016-09-14 |
| CN104285501A (en) | 2015-01-14 |
| PL2820917T3 (en) | 2016-12-30 |
| US10462855B2 (en) | 2019-10-29 |
| EP2820917B1 (en) | 2016-04-20 |
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